Need a DSC HS EMS500 Thermostat (or a Replacement?)

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My HVAC was replaced -- went from an A/C & gas furnace combo to a heat pump
 & gas furnace -- "dual fuel", i.e., is now a "2 heat" system.  

My DSC Power Series 486 alarm system has an ESCORT module which controls th
e thermostat.  My research shows that I need to replace my current DSC HS E
MS300 thermostat (1 heat/1 cool) with a DSC HS EMS500 thermostat (2 heat/1  
cool).  HOWEVER...  I can't find one ANYWHERE (Googling, ebay searches, cal
ling around).  DSC offered no help as it's discontinued -- not even a repla
cement idea.

I tried contacting a few DSC distributors, but they don't keep a surplus of
 obsolete devices.

Any ideas?

Thanks,
Chris

Re: Need a DSC HS EMS500 Thermostat (or a Replacement?)
On Wednesday, October 2, 2019 at 8:28:37 AM UTC-5, den...@gmail.com wrote:
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mp & gas furnace -- "dual fuel", i.e., is now a "2 heat" system.  
Quoted text here. Click to load it
the thermostat.  My research shows that I need to replace my current DSC HS
 EMS300 thermostat (1 heat/1 cool) with a DSC HS EMS500 thermostat (2 heat/
1 cool).  HOWEVER...  I can't find one ANYWHERE (Googling, ebay searches, c
alling around).  DSC offered no help as it's discontinued -- not even a rep
lacement idea.
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of obsolete devices.
Quoted text here. Click to load it

I could be wrong but every image I pull up for that looks like a Trane TZEM
T500AB32MAA  / RCS TZ45 which is still in production, might look at that

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